document.write( "Question 1194158: P(A) = 0.5
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document.write( "P(B) = 0.6
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document.write( "P(A and B) = ? \n" );
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Algebra.Com's Answer #826287 by math_tutor2020(3816)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "If events A and B are independent, then we can say: \n" ); document.write( "P(A and B) = P(A)*P(B) \n" ); document.write( "P(A and B) = 0.5*0.6 \n" ); document.write( "P(A and B) = 0.3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If A and B were dependent, then we cannot use that formula. \n" ); document.write( "Instead we would have to say something like \n" ); document.write( "P(A and B) = P(A)*P(B given A) \n" ); document.write( "or \n" ); document.write( "P(A and B) = P(B)*P(A given B) \n" ); document.write( "Many math textbooks will replace the word \"given\" with a vertical bar.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since the instructions do not make it clear if A & B are independent or not, there is unfortunately not enough information to answer this problem. \n" ); document.write( " \n" ); document.write( " |